Am I missing some parts?.
Is this a good choice for a gamer with a budget of 1000(wich parts should i trade in for more expensive one's) ?
Do I really need a ram cooler or a sound card?
I am also worried about the size of my CPU cooler (will it get in the way of my ram?)

maybe use an arctic freezer 13 or an arctic freezer 7 pro rev.2
you dont need a sound card or
ram cooler since your not overclocking, else the i7 2600k is the better option, but still no ram cooler is required

I would go with a WD black series drive or one of the WD RE series drives. You get a much better hard drive; dual processors, dual supports for the arm AND a 5yr warranty opposed to the 2yr warranty from seagate.